1. physics

    A horizontal circular platform (m = 108.1 kg, r = 3.25m) rotates about a frictionless vertical axle. A student (m = 85.3kg) walks slowly from the rim of the platform toward the center. The angular velocity, omega, of the system is 2.5 rad/s when the

    asked by Jackie on March 8, 2012
  2. physics

    a vertical dock gate is 5m wide and is hinged at 1m from the base of the dock. the dock has sea water with density of 1025 kg /m^3 to a depth of 7.5 on one side and fresh water to depth of 3m on the other side a) find the resultant horizontal force b)

    asked by moody on January 13, 2014
  3. physics

    A small sperical insulator of mass 8.00X10^-2 kg and charge +0.600 mC is hung by a thin wire of negligible mass. A charge of -0.900 mC is held 0.150 m away from the spere and directly to the right of it, so the wire makes an angle [theta] with the

    asked by H on June 30, 2008
  4. Physics

    A 0.60kg basketball is dunked vertically downward so that it leaves the [layer's hand at 8m/s. Assume it is released when the bottom of the ball is at the rim (3.05 meters off the ground). a). find acceleration of the ball once it leaves the player's hand

    asked by Jake on November 19, 2013
  5. Physics

    A Ferris wheel with radius 11.0 m rotates at a constant rate, completing one revolution every 33.9 s. Suppose the Ferris wheel begins to decelerate at the rate of 0.227 rad/s2 when a passenger is at the top of the wheel. Find the magnitude and direction

    asked by Jacob on November 18, 2011
  6. tough physics question

    A 500 turn solenoid with a length of 20 cm and a radius of 1.5 cm carries a current of 2.0 A. A second coil of four turns is wrapped tightly about this solenoid so that it can be considered to have the same radius as the solenoid. Find the following when

    asked by Chris Adison on March 31, 2008
  7. Phsyics

    An 865 kg (1912 lb) dragster, starting from rest, attains a speed of 26.7 m/s (59.8 mph) in 0.59 s. (a) Find the average acceleration of the dragster during this time interval. m/s2 (b) What is the magnitude of the average net force on the dragster during

    asked by Lee Kite on October 3, 2007
  8. Math

    Lincoln Middle school plans to collect more than 2,000 cans of food in a food drive.So far, 668 cans have been collected. Write an inequality to find numbers of cans the school can collect on each of the final 7 days of the drive to meet this goal.

    asked by Anonymous on February 20, 2016
  9. Algebra I

    A local gym charges nonmembers $8 per day to use the voleyball courts. Members pay a yearly fee of $150 and $2 per day to use the voleyball courts. Write and solve an equation to find how many days you must use the voleyball court to justify becoming a

    asked by katya on September 20, 2009
  10. Java

    NEED HELP! I would like to create a class for finding the voltages of 1, 2 or even 4 batteries. The Class can be called BatteryVoltage with a default voltage value of 1.5 (AA Battery) Must allow the user to find the total voltage of batteries when

    asked by Jordan on October 26, 2014
  11. Statistics

    a score of 10 indicates severe depression, while a score of 0 indicates no depression. From reports, she is able to find out about past testing. Fourth graders at her school usually score 5 on the scale, but the variation is not known. Her sample of 20

    asked by anonymous on August 2, 2010
  12. math/science

    How do I determine the isotonic state of a grape cell, the point at which no water would enter or gain a cell? I did an experiment including grapes in which I got these results (can someone post the link without the spaces?) h t t p : / / i 2 5 . t i n y

    asked by john on March 16, 2008
  13. history

    In England in the 1700's, many poor people in rural areas left their farms and moved to cities in search of work. Yet life in cities was not easy, and jobs were very hard to find. from what you know about England in the 1700's, can you explain why so many

    asked by Marina on August 31, 2009
  14. Math (Trig)

    Suppose the point A is on a circle of radius 6 with an angle of 240 degrees. Find the value of the coordinates of this point. Round your results to 3 decimal places. So in this case, x=rcos(theta) y=rsin(theta) x=6cos(240) y=6sin(240) Rounding to 3 decimal

    asked by Giovanni on June 7, 2016
  15. Chemistry

    Suppose a piece of lead with a mass of 14.9 g at a temperature of 92.5 C is dropped into an insulated container of water. The mass of water is 165 g and its temperature before adding the lead is 20.0 C. What is the final temperature? I know that I have to

    asked by Anonymous on August 23, 2007
  16. statistics

    The starting salaries of a random sample of three students who graduated from North Carolina State University last year with majors in the mathematical sciences are $45,000, $50,000, and $40,000. Find a point estimate of the population mean of the starting

    asked by Quintunya on March 16, 2013
  17. Physics

    A 0.60kg basketball is dunked vertically downward so that it leaves the [layer's hand at 8m/s. Assume it is released when the bottom of the ball is at the rim (3.05 meters off the ground). a). find acceleration of the ball once it leaves the player's hand

    asked by Jake on November 19, 2013
  18. physics

    A 49-kg bungee jumper has fallen far enough that her bungee cord is beginning to stretch and resist her downward motion. Find the force (magnitude and direction) exerted on her by the bungee cord at an instant when her downward acceleration has a magnitude

    asked by brian on January 27, 2011
  19. algebra

    After 2009 2009 the sales of new cell phones without cameras began declining. The number of people y (in thousands) who bought a cell phone without a camera can be estimated by the equation y=−30x+270 y=-30x+270, where x is the number of years after 2009

    asked by Duran on April 19, 2016
  20. Math

    Find the simple interest. Round your answer to the nearest cent. Principal = $900 Rate = 4% Time in years = 3 Is this correct: 900*0.04=36 36*3=108.00 Then my next question is when you round to the nearest unit is it the same as regular rounding. 335.42

    asked by Becky on May 29, 2010
  21. physics induced voltage

    A 500 turn solenoid with a length of 20 cm and a radius of 1.5 cm carries a current of 2.0 A. A second coil of four turns is wrapped tightly about this solenoid so that it can be considered to have the same radius as the solenoid. Find the following when

    asked by Chris Adison on March 30, 2008
  22. physics please help me

    A 5.00 kg ball (ball 1), moving to the right at a velocity of +4.00 m/s on a frictionless table, collides head-on with a stationary 7.60 kg ball (ball 2). Find the final velocities of the balls if the collision is as specified below. (a) elastic collision

    asked by dan on November 7, 2010
  23. physics

    High-speed stroboscopic photographs show that the head of a 192 g golf club is traveling at 44.4 m/s just before it strikes a 45.9 g golf ball at rest on a tee. After the collision, the club head travels (in the same direction) at 28.7 m/s. Find the speed

    asked by luma on December 19, 2015
  24. statistics

    Use the given information to find the minimum sample size required to estimate an unknown population mean μ. How many commuters must be randomly selected to estimate the mean driving time of Chicago commuters? We want 99% confidence that the sample mean

    asked by Sarah on January 16, 2015
  25. JAVA PROGRAMMING

    NEED HELP! I would like to create a class for finding the voltages of 1, 2 or even 4 batteries. The Class can be called BatteryVoltage with a default voltage value of 1.5 (AA Battery) Must allow the user to find the total voltage of batteries when

    asked by JORDAN on October 25, 2014
  26. Physics/Math

    A 1.50 kg snowball is fired from a cliff 12.5 m high with an initial velocity of 14.0 m/s, directed 41.0° above the horizontal. (a) Using energy techniques, rather than techniques of Chapter 4, find the speed of the snowball as it reaches the ground below

    asked by Technoboi11 on March 7, 2007
  27. Calculus

    Someone already asked this question but did not understand the answer given at all. Writing to Learn: In a certain video game a cursor bounces back and forth horizontally across the screen at a constant rate. Its distance d from the center of the screen

    asked by Maxwell on March 21, 2011
  28. physics

    Dolphins of the open ocean are classified as Type II Odontocetes (toothed whales). These animals use ultrasonic "clicks" with a frequency of 54.9 kHz to navigate and find prey. Suppose a dolphin sends out a series of clicks that are reflected back from the

    asked by Peyton on December 3, 2014
  29. Logarithms

    1. Find the amount of time required for an investment to double at a rate of 12.3% if the interest is compounded continuously. MY ANSWER: 5.635 yrs 2. Solve e^(0.2x) < 21.2 by using natural logarithms. MY ANSWER: X

    asked by Jackie on August 12, 2009
  30. physics

    a window with a smooth hinge at the top is held open at an angle 30 degrees to the vertical by a horizontal force applied to the center of it lower edge. the force of gravity on the window is 3kgf acting through its mid point. draw a scale diagram of the

    asked by Moses on October 10, 2014
  31. statistics

    The general manager for Gordon's Self Service Gasoline is interested in estimating the mean number of gallons of gasoline that are purchased by customers at their Philadelphia location. He would like his estimate to be within plus or minus 0.50 gallons,

    asked by Melvin on April 18, 2012
  32. English

    I have to write 4 sentences using an adverb and 4 using a preposition. Could you please check? I will list the adverbs first. 1.I'm sure he let the dog come in last night. 2.We watched the balloons floating far above our heads. 3.The bus drove past the

    asked by Jim on October 27, 2010
  33. english

    SYNONYMS WORD MATCH WORD 1.FIND PLACE 2.HELP HALT 3.FOE LIKE 4.GRAND ENEMY 5.ENJOY HURRY 6.UNSALF TRIP 7.SIMPLE GREAT 8.PUT TOTE 9.DASH PLUMP 10.GO RIGHT 11.STOP HIKE 12.JOURNEY GRAB 13.STUFFED WITTY 14.FUNNY EASY 15.CARRY LEAVE 16.WALK ASSIST 17.FIRM

    asked by sahil on November 12, 2009
  34. soil mechanic

    In order to determine the average permeability of a bed of sand 12.5 m thick overlying an impermeable stratum, a well was sunk through the sand and a pumping test carried out. After some time the discharge was 850kg/min and the drawdowns in observation

    asked by Adam on December 9, 2016
  35. Social Studies

    On the eve of the French Revolution, the French Monarchy's greatest problem was: A. Losing a war with Great Britain B. The inability to handle finances and collect suffecient taxes. C. A conflict with the Pope. D. The discontent of the rural poor. I have

    asked by Keith on August 17, 2007
  36. English

    Romeo and Juliet! Explain and evaluate the literary device- I have chosen the quote “Indeed, I never shall be satisfied With Romeo, till I behold him—dead— Is my poor heart for a kinsman vexed. Madam, if you could find out but a man to bear a poison,

    asked by Um on February 14, 2018
  37. Statistical inference

    Suppose the results for stat 201 in 2014 are normally distributed with mean 160 and standard deviation 18 . Find the probability that a random sample of size 36 gives a sample mean value in the following cases Question : between 120 and 220 p(120 < z <

    asked by Manngopo on August 2, 2015
  38. Physics(Please check)

    A paperweight, when weighed in air, has a weight of W = 6.95 N. When completely immersed in water, however, it has a weight of Win water = 4.26 N. Find the volume of the paperweight. Would I multiply the two values of weight and then by the density of

    asked by Hannah on June 21, 2012
  39. Maths

    Statistics The marks scored by a sample of 56 students are summarised by: N=56 Sum of x =3026 sum of(x-the mean)^2 =15378 A) calculate the mean and the standard deviation Mean I got - 54.04 (2.dp) Standard deviation I got - 16.72 (2.dp) Is this correct? B)

    asked by Anonymous on November 15, 2015
  40. math [basic trig]

    Sam and Markus are standing on level ground 100m apart. A large tree is due North of Markus and on a bearing of 065degrees from Sam. The top of the tree appears at an angle of elevation of 25 degrees to Sam and 15 degrees to Markus. Find the height of the

    asked by matt on March 25, 2008
  41. Maths

    Statistics The marks scored by a sample of 56 students are summarised by: N=56 Sum of x =3026 sum of(x-the mean)^2 =15378 A) calculate the mean and the standard deviation Mean I got - 54.04 (2.dp) Standard deviation I got - 16.72 (2.dp) Is this correct? B)

    asked by Anonymous on November 15, 2015
  42. Science Word

    Is cell theory is 1. the mayjor theory of life science 2. the cell is the basic unit of life 3. organisms are made up of one or more cells 4. all cells come from other cells I know it's 1 Im justing sure it's more than a answer. You (Ms. Sue) said that I

    asked by Laruen on November 15, 2011
  43. algebra

    The volume V of a gas varies inversely as the pressure P on it. If the volume is 250 cm3 under a pressure of 35 kg/cm3, solve for the pressure applied to have a volume of 180 cm3. Be sure to define your variables, find your constant variable, construct

    asked by Anonymous on April 30, 2017
  44. Calculus

    A recording camera is located 2500 feet from the launch pad for recording a rocket launch. As the rocket lifts off, the angle of elevation of the camera increases 4 degrees per second while recording the launch. Find the instantaneous velocity and

    asked by BA on November 16, 2012
  45. Math

    Mrs. Scott decided that she would spend more no more than $120 to buy a jacket and a skirt.If the price of jacket was $20 more than 3 times the price of the skirt.Find the highest possible price of the skirt. I have the answer but they add another variable

    asked by Brandon on December 5, 2016
  46. Physics Honors

    A car travels due east with a speed of 60.0 km/h. Rain is falling vertically with respect to the Earth. The traces of the rain on the side windows of the car make an angle of 45.0° with the vertical. Find the velocity of the rain with respect to the car

    asked by Kristen on October 16, 2010
  47. c++

    Your Mathematic school teacher want to use a program that can read the name and the mark of a student. Your teacher want the program to automatically find the grade of the mark and display the result(name, mark and grade). Help your teacher to develop a

    asked by sarah on October 11, 2012
  48. Social Studies

    Why did Washington and his troops cross the Delaware River in small boats on Christmas night, 1776? A. The weather was good and the troops hoped to find a sheltered place to rest. B. Washington was leading them to a surprise attack on the British at

    asked by Aralyn on November 10, 2016
  49. Stats

    Suppose that a random sample of adults has a mean score of on a standardized personality test, with a standard deviation of . (A higher score indicates a more personable participant.) If we assume that scores on this test are normally distributed, find a

    asked by Anonymous on November 19, 2011
  50. physics!

    An Alaskan recue plane drops a package of emergency rations to a stranded party of explorers, as illustrated. The plane is traveling horizontally at 100.0m/s at a height of 50.0 m above ground. What horizontal distance does the package tral before striking

    asked by emily on December 9, 2008
  51. math

    the length of a rectangle is 5 ft more than twice the width. a)if x represents the width of the rctangle, represent the perimeter of the rectangle in terms of x. b) if the perimeter if the rectangle is 2 ft more than eight times the width of the rectangle,

    asked by anthony on September 12, 2009
  52. Calculus II

    I need to find if the summation of (n^4)/(n^10 + 1) is convergent or divergent from n=1 to infinity. I tried splitting it up into two sums, one being 1/n^6, which would be convergent because p=6>1, and then the other being n^4, but I'm not sure how to know

    asked by Laura on April 4, 2017
  53. Algebra

    A 36-meter rope is divided into three pieces. One piece is twice as long as the shortest piece, and the third piece is 1 meter longer than four times the shortest piece. Find the length of the shortest piece.

    asked by Kelsey on October 15, 2016
  54. math

    Bob’s Barber Shop estimates their gross revenue for the second quarter to be given by the polynomial 7x3 + 6x2 – 6x – 3. The shop estimates their costs for that quarter to be given by 6x2 – 9x + 9. For the second quarter, find and simplify a

    asked by Sparrow on March 4, 2012
  55. calculus

    Suppose that the sales at Borders bookstores went from 68 million dollars in 1990 to 427 million dollars in 1995 . Find an exponential function to model the sales (in millions of dollars) as a function of years,t, since 1990.

    asked by amy on January 23, 2014
  56. Algebra

    On the first part of a trip to Carmel traveling on the​ freeway, Marge averaged 70 mph. On the rest of the​ trip, which was 25 mi longer than the first​ part, she averaged 60mph. Find the total distance to Carmel if the second part of the trip took

    asked by Ruby on November 27, 2016
  57. Pre-Cal

    Angles of elevation to an airplane are measured from the top and the base of a building that is 40 m tall. The angle from the top of the building is 37°, and the angle from the base of the building is 40°. Find the altitude of the airplane. (Round your

    asked by Kendall on November 28, 2012
  58. Trig

    A ship leaves its homeport and sails on a bearing of N28degrees10'E. Another ship leaves the same port at the same time and sails on a bearing of S61degrees50'E. If the first ship sails at 24.0 mph and second sails at 28mph, find the distance between the

    asked by SK on November 28, 2010
  59. math

    I am trying to solve a problem using Newton's equation, which is (-1/2)(9.8)t^2+ vot+ h. The problem says that a car rolls of a 120 foot high cliff. I know how to right the equation for this problem which would be (-1/2)(9.8 m/s) t^2 + vot + 37m. I am

    asked by Natalie on June 14, 2008
  60. Calculus/Physics

    A spring has a natural length of 10in. An 800lb force stretches the spring to 14in. A. Find the force constant B. How much work is done in stretching the spring from 10 to 12 inches? C. How far beyond its natural length will a 1600lb force stretch the

    asked by Tim on May 2, 2014
  61. Math

    1. Determine the equation of the right bisector of the line segment E(2, 6) and F(4, -2). Draw the diagram. 2. Given three points D(2, 5) E(-2, -3) and F(4, -6) determine whether or not the line through D and E is perpendicular to the line through E and F.

    asked by Madeline on June 30, 2014
  62. Calc

    The figure (which is not pictured, sorry) shows the slope field for y =.2(9-y^2). Make a sketch of the solution using the initial value y(-4)=-2. Find the function f(x) that this solution curve is approaching as x-->infinity. I need help with finding the

    asked by Alice on March 30, 2017
  63. Algebra 1a

    I posted this early, I don't understand the answer, Two angles are complementary. The sum of the measure of the first angle and one-fourth the second angle is 87.75 degrees. Find the measures of the angles? What is the measure of the smaller angle? What is

    asked by Johnny on May 21, 2010
  64. trgonometry

    a tower and a monumement stand on a level plane. The angles of depression of the top and bottom of monument as viewed from the top of the tower are 13 degree and 31 degree respectively. If the height of the tower is 145 ft.,find the height of the monument

    asked by eekim on July 12, 2011
  65. physics

    A ray of light traveling in air strikes the surface of a liquid. If the angle of incidence is 33.5◦ and the angle of refraction is 19.8◦, find the critical angle for light traveling from the liquid back into the air. Answer in units of◦

    asked by angel on April 1, 2012
  66. algebra1

    M varies directly with n; m=144 when n=8. What is the constant of variation k? I don't know what this mean. Could you help me out in solving this/ A statement such as "M varies directly with n" can be changed to the equation M=kn, where k is a constant.

    asked by cheryl on March 29, 2007
  67. algebra-word problem

    Flying to Kampala with a tailwind a plane averaged 158 km/h. On the return trip the plane only averaged 112 km/h while flying back into the same wind. Find the speed of the wind and the speed of the plane in still air. TIA

    asked by jen on March 23, 2008
  68. Chemistry

    Consider the following reaction: CO(g)+2H2(g)⇌CH3OH(g) This reaction is carried out at a specific temperature with initial concentrations of [CO] = 0.27 M and [H2] = 0.49 M. At equilibrium, the concentration of CH3OH is 0.11 M. Find the equilibrium

    asked by Donnie on June 16, 2016
  69. ochem

    A sample of Limonene has a specific rotation of +76.9. What is the % ee and molecular composition of this sample? R(+)- is +125.6 and S (-)- 122.1. I'm confused I don't know whether I should divided by 125.6 or 122.1. %ee=(76.9/125.6)*100=61%. Is this

    asked by bjisa on November 13, 2010
  70. phycis

    a bullet of mass 0.01kg is fired into a sandbag of mass 0.49kg handing from atree.the sandbag with the bullet embedded into it swing away at 10m/s find: a.the momentum after collision b.the momentum before the collision c.the velocity of the bullet

    asked by najma on February 15, 2013
  71. Math

    A cell phone company charges a monthly fee of $17.95 and $0.03 per minute Write an equation that represents the cost (c) for using the cell phone for minutes (m) Use your equation from part a to find the cost for using the phone for 150 minutes

    asked by Gina on April 28, 2014
  72. SAT math

    The population of a city can be modeled using the formula P=100,000e^(0.05t), where t is the number of years after 2012 and P is the city's population. Which of the following equations can be used to find the number of years after 2012 that the population

    asked by Anonymous on May 4, 2016
  73. Statistics

    9. Assume the weight, W, of a randomly selected adult has a normal distribution with a mean of 175 pounds and a standard deviation of 10 pounds.. Find the probability, P(W < 190), that a randomly selected adult weighs less than 190 pounds.

    asked by Josh on December 13, 2011
  74. Science- PLEASE, this is due tomorrow for test!

    What is the section of EMS of satellite phones? What wavelength and frequency does it use? are there any dangers in using it? What is the wavelength and frequency of pagers? are there any dangers in using it? Is there any danger in using cordless phones?

    asked by Lily on October 23, 2008
  75. math

    A solid sphere of radius Xcm is placed in a cylinder of radius 2Xcm and height 2Xcm. The cylinder is then filled with water to the brim and the solid gently withdrawn. Find d volume of d water in d cylinder in cm3

    asked by benjieo on May 27, 2014
  76. math

    JILL NEEDS RIBBON TO WRAP GIFTS . THE RIBBON SELLS FOR $2 Per Yard , And Jill Needs 24 Inches Of Ribbon For Each Gift .Which equation could be used to find r , the amount of ribbon in yards , jill should purchase a. r = (36 Divided by 3)(24times2) b. r =2

    asked by Jay;a on April 13, 2014
  77. Math

    A lottery prize worth $1,000,000 is awarded in payments of $10,000 five times a year for 20 years. Suppose the money is worth 20% compounded five times per year. What is the formula used to find the present value of the prize?

    asked by Nick on December 12, 2010
  78. Science

    The following heats of formation are used to find the change in enthalpy for the formation of tin chloride in the following reaction Sn (s) + 2Cl2(g) --> SnCl4(l).Sn(s) + Cl2(g) --> Sn Cl2(l) DH = -186.2 kJSnCl2(s) + Cl2(g) --> SnCl4(l) DH = -325.1 kJWhat

    asked by Mary on April 7, 2013
  79. trig

    angles of elevation to an airplane are measured from the top and the base of a building that is 40 m tall. The angle from the top of the building is 31°, and the angle from the base of the building is 40°. Find the altitude of the airplane. (Round your

    asked by Barb on November 28, 2012
  80. physics

    A machine part rotates at an angular speed of 0.38 rad/s; its speed is then increased to 3.46 rad/s using an angular acceleration of 0.61 rad/s2. Find the angle through which the part ro- tates before reaching this final speed. Answer in units of rad

    asked by phys101 on October 21, 2011
  81. Algebra II

    Among 100 coffee drinkers, 36 said that they preferred their coffee black and the rest did not prefer their coffee black to those who prefer non black coffee. Find a ratio for each of the following and write it as a ratio of integers in lowest terms. I do

    asked by Christopher on March 7, 2010
  82. investment

    A certain amount of money is invested at 6% per year. A second amount is P5000 larger than the first is invested at 8% per year. The interest from the investment at the higher rate exceeds the income from the lower investment by P500. Find the investment

    asked by HELP HELP MNHS on November 28, 2012
  83. Math

    1. you deposit $200 into a savings account with interest compounded. annually, the expression 200(1+R)^ 2, where R is the interest rate, gives the account balance after 2 years. Expand this expression and simplify. Find the account balance if R=0.04.

    asked by MountainDew on June 9, 2009
  84. Math

    Devon purchased tickets to an air show for 9 adults and 2 children. The total cost was $252. The cost of a child's ticket was $6 less than the cost of an adult's ticket. Find the price of an adult's ticket and a child's ticket.

    asked by Anonymous on June 3, 2013
  85. Chemistry

    the reaction is CO + SO3 CO2 + SO2, the rate law for this reaction is rate=k[SO3] and the mechanism is SO3 -> SO2 + O CO + O -> CO2 Which is the slow step? I have to find catalysts and intermediates and is O both catalyst and intermediate? If it isn't,

    asked by Kat on June 5, 2011
  86. Physics

    A projectile is shot from the ground at an angle of 60 degrees with respect to the horizontal, and it lands on the ground 5 seconds later. Find: a. the horizontal component of initial velocity b. the vertical component of initial velocity c. initial speed

    asked by nam maurer on November 23, 2011
  87. Geometry

    Starla is 5feet 9inches tall. To find the height of a tree,she measured her shadow and the tree's shadow. Her shadow was 8feet long when the trees shadow was 30 feet long. To the nearest foot,how tall is the tree?

    asked by Anonymous on May 27, 2010
  88. Math

    Devon purchased tickets to an air show for 9 adults and 2 children. The total cost was $252. The cost of a childʹs ticket was $6 less than the cost of an adultʹs ticket. Find the price of an adultʹs ticket and a childʹs ticket.

    asked by Anonymous on June 3, 2013
  89. physics

    A bat emits a sound whose frequency is 83.6 kHz. The speed of sound in air at 20.0 oC is 343 m/s. However, the air temperature is 36.0 oC, so the speed of sound is not 343 m/s. Assume that air behaves like an ideal gas, and find the wavelength of the sound

    asked by Anonymous on January 21, 2013
  90. investment

    A certain amount of money is invested at 6% per year. A second amount is P5000 larger than the first is invested at 8% per year. The interest from the investment at the higher rate exceeds the income from the lower investment by P500. Find the investment

    asked by HELP HELP MNHS on November 28, 2012
  91. Math

    During the first part of a trip, a bicyclist travels 56 miles at a certain speed.The return trip is made at a speed that is 6 mph slower. Total time for the round trip is 16hr. Find the bicyclist's speed on each part of the trip.

    asked by Ethan on July 13, 2018
  92. college algebra

    store mixes a Brazilian coffee worth worth $10 per kilogram and a turkish coffee worth $13 per kilogram. The mixture is to sell for $12 per kilogram. Find out how much of each should be used to make a 420-kilogram mixture. my calculations all came out

    asked by college on August 22, 2014
  93. physics

    A canoe of mass 70 kg with a paddler of mass 55 kg are in a river. If the river's current exerts a force of 15 N [E] while the paddler is paddling with an average force of 22 N [N38degreesW], find the acceleration of the canoe and paddler. Use both a

    asked by Jess on April 6, 2011
  94. math

    It takes Bill 24 minutes to type and spell check 10 pages. Find how many pages he can type and spell check in 5.5 hours. Round to the nearest whole number if necessary. A. 55 pages B. 138 pages C. 792 pages D. 229 pages

    asked by Anonymous on April 17, 2016
  95. friction

    A 40 kg slab rests on a friction less floor.a 10 kg block rests on top of the slab.the coefficient kinetic friction between the block and the slab is 0.40.a horizontal force of 100N is applied on the 10 kg block.find the resulting acceleration of the slab.

    asked by mahesh on September 28, 2014
  96. physics

    A canoe of mass 70 kg with a paddler of mass 55 kg are in a river. If the river's current exerts a force of 15 N [E] while the paddler is paddling with an average force of 22 N [N38degreesW], find the acceleration of the canoe and paddler. Use both a

    asked by Jess on April 7, 2011
  97. Physics

    A bat emits a sound whose frequency is 83.2 kHz. The speed of sound in air at 20.0 oC is 343 m/s. However, the air temperature is 40.5 oC, so the speed of sound is not 343 m/s. Assume that air behaves like an ideal gas, and find the wavelength of the

    asked by Orla on January 15, 2013
  98. math

    A rocket is stopped 12 feet from a satellite when it begings accelerating away from the satellite at a constant rate of 12 feet per second. The distance between the rocket and the satellite is given by the polynormial P(t)= 6t^2+12. Find the distance

    asked by ReRe on February 8, 2010
  99. Chemistry

    When 23.3 mL of 0.14 M HCl are added to 50.0 mL of a 0.16 M solution of a weak monoprotic base, the pH of the solution is 10.50. What is the Kb of the weak base? do u find moles of both and then add the moles for HB+ and then just use the B- moles for the

    asked by Chris on March 8, 2009
  100. statistics

    the monthly sales at a computer store have mean of $25,000 and a standard deviation of $4,000. profits are calculated by multiplying sales ny 30% and subtracting fixed cost of $60,000. find the mean and standard deviation of monthly profit

    asked by yetunde on November 1, 2012

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